Question

(iv) In an isosceles triangle, the vertex angle is twice either base angle. (Let the
angle be b in degrees. Remember that the sum of angles of a triangle is
degrees)​

Answer 1

Answer:

Since the sum of the interior angles of any triangle adds up to 180∘ and also the base angles of an isosceles triangle are equal,we may let the base angles be x , then the vertex angle is 2x . ∴x+x+2x=180∘ .